/*
 *  eel-self-checks.c: The self-check framework.
 *
 *  Copyright (C) 1999 Eazel, Inc.
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library General Public License as
 *  published by the Free Software Foundation; either version 2 of the
 *  License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public
 *  License along with this program; if not, see <http://www.gnu.org/licenses/>.
 *
 *  Author: Darin Adler <darin@eazel.com>
 */

#include <config.h>

#if !defined (EEL_OMIT_SELF_CHECK)

#include "eel-self-checks.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

static gboolean failed;

static const char *current_expression;
static const char *current_file_name;
static int current_line_number;

void
eel_exit_if_self_checks_failed (void)
{
    if (!failed)
    {
        return;
    }

    printf ("\n");

    exit (EXIT_FAILURE);
}

void
eel_report_check_failure (char *result,
                          char *expected)
{
    if (!failed)
    {
        fprintf (stderr, "\n");
    }

    fprintf (stderr, "FAIL: check failed in %s, line %d\n", current_file_name, current_line_number);
    fprintf (stderr, "      evaluated: %s\n", current_expression);
    fprintf (stderr, "       expected: %s\n", expected == NULL ? "NULL" : expected);
    fprintf (stderr, "            got: %s\n", result == NULL ? "NULL" : result);

    failed = TRUE;

    g_free (result);
    g_free (expected);
}

static char *
eel_strdup_boolean (gboolean boolean)
{
    if (boolean == FALSE)
    {
        return g_strdup ("FALSE");
    }
    if (boolean == TRUE)
    {
        return g_strdup ("TRUE");
    }
    return g_strdup_printf ("gboolean(%d)", boolean);
}

void
eel_before_check (const char *expression,
                  const char *file_name,
                  int         line_number)
{
    current_expression = expression;
    current_file_name = file_name;
    current_line_number = line_number;
}

void
eel_after_check (void)
{
    /* It would be good to check here if there was a memory leak. */
}

void
eel_check_boolean_result (gboolean result,
                          gboolean expected)
{
    if (result != expected)
    {
        eel_report_check_failure (eel_strdup_boolean (result),
                                  eel_strdup_boolean (expected));
    }
    eel_after_check ();
}

void
eel_check_integer_result (long result,
                          long expected)
{
    if (result != expected)
    {
        eel_report_check_failure (g_strdup_printf ("%ld", result),
                                  g_strdup_printf ("%ld", expected));
    }
    eel_after_check ();
}

void
eel_check_string_result (char       *result,
                         const char *expected)
{
    gboolean match;

    /* Stricter than eel_strcmp.
     * NULL does not match "" in this test.
     */
    if (expected == NULL)
    {
        match = result == NULL;
    }
    else
    {
        match = result != NULL && strcmp (result, expected) == 0;
    }

    if (!match)
    {
        eel_report_check_failure (result, g_strdup (expected));
    }
    else
    {
        g_free (result);
    }
    eel_after_check ();
}

void
eel_before_check_function (const char *name)
{
    fprintf (stderr, "running %s\n", name);
}

void
eel_after_check_function (void)
{
}

#endif /* ! EEL_OMIT_SELF_CHECK */
